Your friend needs a lot more than just ozone. The ozone helps but at this point he has to bring on the big things that can do something about the cancer. If everything was just diverted and not done permanently should he be able to choose the right treatment, it can be reattached. Some doctors do it permanently therefore a surgery to reattached after the cancer is very difficult or nonexistent. My theory is the doctors never expect to ever reattach because they never expect a cure.
You can send him over to Jesicha's Hope [jesichashope.org] and he can look at some very good resources and the clinic where my daughter went does the ozone. Any one of the doctors there could answer his question on it and much more. He can talk to one for no charge regarding his case; they can give him some pretty good recommendations then he can make a good educated decision. Its his life and he has to make those decisions, but he must have all opportunities on the table. One thing for sure, his case is not hopeless; while conventional doctors may think this, we do not; there is always hope and there are enough proven treatments out there to give him that hope.